CA2836862C - Dispositif de fourniture de signaux d'activation d'alignement temporel, codeur de signaux audio, procede de fourniture de signaux d'activation d'alignement temporel, procede de co dage d'un signal audio et programmes informatiques - Google Patents
Dispositif de fourniture de signaux d'activation d'alignement temporel, codeur de signaux audio, procede de fourniture de signaux d'activation d'alignement temporel, procede de co dage d'un signal audio et programmes informatiques Download PDFInfo
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- CA2836862C CA2836862C CA2836862A CA2836862A CA2836862C CA 2836862 C CA2836862 C CA 2836862C CA 2836862 A CA2836862 A CA 2836862A CA 2836862 A CA2836862 A CA 2836862A CA 2836862 C CA2836862 C CA 2836862C
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- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
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- G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
- G10L19/10—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a multipulse excitation
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Landscapes
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Signal Processing (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Human Computer Interaction (AREA)
- Computational Linguistics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Quality & Reliability (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Geophysics And Detection Of Objects (AREA)
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
Abstract
Un codeur audio servant à coder un signal audio comprend un aligneur temporel servant à aligner le signal audio au moyen dune caractéristique dalignement temporel, un convertisseur temps-fréquence servant à convertir un signal audio aligné temporellement en une représentation spectrale comportant un nombre de coefficients spectraux et un processeur servant à traiter un nombre variable de coefficients spectraux en vue de générer un signal audio codé. Le processeur est configuré pour établir de manière variable un nombre de coefficients spectraux pour une trame du signal audio en fonction dune caractéristique dalignement temporel de la trame de sorte quune variation de bande passante représentée par le nombre traité de coefficients spectraux de trame en trame est réduite ou éliminée.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US7987308P | 2008-07-11 | 2008-07-11 | |
US61/079,873 | 2008-07-11 | ||
CA2730239A CA2730239C (fr) | 2008-07-11 | 2009-07-06 | Dispositif de fourniture de signaux d'activation d'alignement temporel, codeur de signaux audio, procede de fourniture de signaux d'activation d'alignement temporel, procede de co dage d'un signal audio et programmes informatiques |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA2730239A Division CA2730239C (fr) | 2008-07-11 | 2009-07-06 | Dispositif de fourniture de signaux d'activation d'alignement temporel, codeur de signaux audio, procede de fourniture de signaux d'activation d'alignement temporel, procede de co dage d'un signal audio et programmes informatiques |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2836862A1 CA2836862A1 (fr) | 2010-01-14 |
CA2836862C true CA2836862C (fr) | 2016-09-13 |
Family
ID=41037694
Family Applications (5)
Application Number | Title | Priority Date | Filing Date |
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CA2730239A Active CA2730239C (fr) | 2008-07-11 | 2009-07-06 | Dispositif de fourniture de signaux d'activation d'alignement temporel, codeur de signaux audio, procede de fourniture de signaux d'activation d'alignement temporel, procede de co dage d'un signal audio et programmes informatiques |
CA2836862A Active CA2836862C (fr) | 2008-07-11 | 2009-07-06 | Dispositif de fourniture de signaux d'activation d'alignement temporel, codeur de signaux audio, procede de fourniture de signaux d'activation d'alignement temporel, procede de co dage d'un signal audio et programmes informatiques |
CA2836871A Active CA2836871C (fr) | 2008-07-11 | 2009-07-06 | Dispositif de fourniture de signaux d'activation d'alignement temporel, codeur de signaux audio, procede de fourniture de signaux d'activation d'alignement temporel, procede de co dage d'un signal audio et programmes informatiques |
CA2836858A Active CA2836858C (fr) | 2008-07-11 | 2009-07-06 | Dispositif de fourniture de signaux d'activation d'alignement temporel, codeur de signaux audio, procede de fourniture de signaux d'activation d'alignement temporel, procede de codage d'un signal audio et programmes informatiques |
CA2836863A Active CA2836863C (fr) | 2008-07-11 | 2009-07-06 | Dispositif de fourniture de signaux d'activation d'alignement temporel, codeur de signaux audio, procede de fourniture de signaux d'activation d'alignement temporel, procede de co dage d'un signal audio et programmes informatiques |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA2730239A Active CA2730239C (fr) | 2008-07-11 | 2009-07-06 | Dispositif de fourniture de signaux d'activation d'alignement temporel, codeur de signaux audio, procede de fourniture de signaux d'activation d'alignement temporel, procede de co dage d'un signal audio et programmes informatiques |
Family Applications After (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA2836871A Active CA2836871C (fr) | 2008-07-11 | 2009-07-06 | Dispositif de fourniture de signaux d'activation d'alignement temporel, codeur de signaux audio, procede de fourniture de signaux d'activation d'alignement temporel, procede de co dage d'un signal audio et programmes informatiques |
CA2836858A Active CA2836858C (fr) | 2008-07-11 | 2009-07-06 | Dispositif de fourniture de signaux d'activation d'alignement temporel, codeur de signaux audio, procede de fourniture de signaux d'activation d'alignement temporel, procede de codage d'un signal audio et programmes informatiques |
CA2836863A Active CA2836863C (fr) | 2008-07-11 | 2009-07-06 | Dispositif de fourniture de signaux d'activation d'alignement temporel, codeur de signaux audio, procede de fourniture de signaux d'activation d'alignement temporel, procede de co dage d'un signal audio et programmes informatiques |
Country Status (17)
Country | Link |
---|---|
US (7) | US9015041B2 (fr) |
EP (5) | EP2410520B1 (fr) |
JP (5) | JP5538382B2 (fr) |
KR (5) | KR101400535B1 (fr) |
CN (5) | CN102150201B (fr) |
AR (8) | AR072740A1 (fr) |
AT (1) | ATE539433T1 (fr) |
AU (1) | AU2009267433B2 (fr) |
CA (5) | CA2730239C (fr) |
ES (5) | ES2654433T3 (fr) |
HK (5) | HK1155551A1 (fr) |
MX (1) | MX2011000368A (fr) |
PL (4) | PL2410522T3 (fr) |
PT (3) | PT2410522T (fr) |
RU (5) | RU2536679C2 (fr) |
TW (1) | TWI463484B (fr) |
WO (1) | WO2010003618A2 (fr) |
Families Citing this family (85)
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US7720677B2 (en) * | 2005-11-03 | 2010-05-18 | Coding Technologies Ab | Time warped modified transform coding of audio signals |
EP2107556A1 (fr) * | 2008-04-04 | 2009-10-07 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Codage audio par transformée utilisant une correction de la fréquence fondamentale |
ES2654433T3 (es) | 2008-07-11 | 2018-02-13 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Codificador de señal de audio, método para codificar una señal de audio y programa informático |
MY154452A (en) * | 2008-07-11 | 2015-06-15 | Fraunhofer Ges Forschung | An apparatus and a method for decoding an encoded audio signal |
EP2517201B1 (fr) * | 2009-12-23 | 2015-11-04 | Nokia Technologies Oy | Traitement audio parcimonieux |
ES2461183T3 (es) * | 2010-03-10 | 2014-05-19 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V | Decodificador de señales de audio, codificador de señales de audio, procedimiento para decodificar una señal de audio, método para codificar una señal de audio y programa de ordenador que utilizan una adaptación dependiente de la frecuencia de un contexto de codificación |
RU2683175C2 (ru) | 2010-04-09 | 2019-03-26 | Долби Интернешнл Аб | Стереофоническое кодирование на основе mdct с комплексным предсказанием |
US20120029926A1 (en) | 2010-07-30 | 2012-02-02 | Qualcomm Incorporated | Systems, methods, apparatus, and computer-readable media for dependent-mode coding of audio signals |
US9208792B2 (en) * | 2010-08-17 | 2015-12-08 | Qualcomm Incorporated | Systems, methods, apparatus, and computer-readable media for noise injection |
WO2012037515A1 (fr) | 2010-09-17 | 2012-03-22 | Xiph. Org. | Procédés et systèmes pour une résolution temps-fréquence adaptative dans un codage de données numériques |
CN103282958B (zh) | 2010-10-15 | 2016-03-30 | 华为技术有限公司 | 信号分析器、信号分析方法、信号合成器、信号合成方法、变换器和反向变换器 |
US9792925B2 (en) * | 2010-11-25 | 2017-10-17 | Nec Corporation | Signal processing device, signal processing method and signal processing program |
JP5722916B2 (ja) * | 2011-01-14 | 2015-05-27 | パナソニック インテレクチュアル プロパティ コーポレーション オブアメリカPanasonic Intellectual Property Corporation of America | 符号化装置および符号化方法 |
PT3239978T (pt) | 2011-02-14 | 2019-04-02 | Fraunhofer Ges Forschung | Codificação e descodificação de posições de pulso de faixas de um sinal de áudio |
MY160265A (en) | 2011-02-14 | 2017-02-28 | Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E V | Apparatus and Method for Encoding and Decoding an Audio Signal Using an Aligned Look-Ahead Portion |
TWI488176B (zh) | 2011-02-14 | 2015-06-11 | Fraunhofer Ges Forschung | 音訊信號音軌脈衝位置之編碼與解碼技術 |
BR112013020324B8 (pt) | 2011-02-14 | 2022-02-08 | Fraunhofer Ges Forschung | Aparelho e método para supressão de erro em fala unificada de baixo atraso e codificação de áudio |
PT2676270T (pt) * | 2011-02-14 | 2017-05-02 | Fraunhofer Ges Forschung | Codificação de uma parte de um sinal de áudio utilizando uma deteção de transiente e um resultado de qualidade |
AR085794A1 (es) | 2011-02-14 | 2013-10-30 | Fraunhofer Ges Forschung | Prediccion lineal basada en esquema de codificacion utilizando conformacion de ruido de dominio espectral |
PL2676268T3 (pl) | 2011-02-14 | 2015-05-29 | Fraunhofer Ges Forschung | Urządzenie i sposób przetwarzania zdekodowanego sygnału audio w domenie widmowej |
KR101424372B1 (ko) | 2011-02-14 | 2014-08-01 | 프라운호퍼 게젤샤프트 쭈르 푀르데룽 데어 안겐반텐 포르슝 에. 베. | 랩핑 변환을 이용한 정보 신호 표현 |
JP5969513B2 (ja) | 2011-02-14 | 2016-08-17 | フラウンホーファー−ゲゼルシャフト・ツール・フェルデルング・デル・アンゲヴァンテン・フォルシュング・アインゲトラーゲネル・フェライン | 不活性相の間のノイズ合成を用いるオーディオコーデック |
US9015042B2 (en) * | 2011-03-07 | 2015-04-21 | Xiph.org Foundation | Methods and systems for avoiding partial collapse in multi-block audio coding |
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EP2707873B1 (fr) * | 2011-05-09 | 2015-04-08 | Dolby International AB | Procédé et codeur de traitement de signal audio stéréo numérique |
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